INVT CHF100A variable speed drive

PostedFebruary 1, 2024

UpdatedAugust 12, 2024

ByMbhoni Mashavani

This guide will show you how to connect the Polar Monitoring Gateway to the INVT CHF100A Variable Speed Drive. It will also take you through the setup and parameters required on the INVT CHF100A to ensure communications to the Polar Gateway.

Steps to follow:

Connect power to the Gateway.
Connect RS-485.
Final checks.
Power on the system.
Configure the INVT CHF100A Serial Parameters.

INVT CHF100A Connection Setup

1. Connect power to the Gateway.

A. Power the gateway from the external power supply.

Wire the Polar Gateway to a 12-24 V DC power supply. Connect the positive wire to the positive terminal and the negative wire to the negative terminal.

B. Power the gateway from the VSD.

Wire the Polar Gateway directly to the VSD. Connect the positive wire to the (+24V) terminal and the negative wire to the (COM) terminal.

2. Connect RS-485.

Wire the RS-485 cable to allow communication with the Polar Gateway. Connect A+ to 485+ terminal, B- to 485- and G to GND. What is RS-485?

3. Final checks

Before switching on the Gateway and the device, make sure you have completed all the previous steps correctly.

Make sure the wiring is secure – no short circuits.
Ensure that all connections are secure on the device and the gateway.
Re-check the RS-485 twisted pair cable is correctly wired.
Check that the A and B are correctly wired to the device.

4. Power on the system

Now you are ready to go, you can now switch on the Polar Gateway and the INVT CHF100A.

5. Configure INVT CHF100A Serial Parameters

In order for the Gateway to correctly communicate with the INVT CHF100A controller, there will need to be some changes made to the communication parameters.

Serial Communication Setup

Below is the basic set of parameters needed inorder to get serial communications working. This should allow you to see data and be able to program the device remotely.

Name	Description	Parameter	Default	Required
Serial Address	Serial Slave ID	PC.00	1	1
Serial Baud Rate	Baud Rate	PC.01	4 = 19200bps	3=9600bps
Serial Bytes Config	Communication settings	PC.02	1 = 8 bits, even,1	0= 8 bits, no, 1

Remote Control Setup

Name	Description	Parameter	Default	Required
Stop/RST function selection	Start/stop command source when in remote mode	P0.01	0	2=always valid
Run command source	Command source	P7.04	0	3=communication (LED light on)

You may now sign in to the Polar Portal to monitor the device remotely, the button on the right will take you through a setup process.